Question

URGENTE racionalizar as expressões

Answer 1

$\frac{\sqrt3}{1-3\sqrt3}=\frac{\sqrt3}{1-3\sqrt3}\cdot\frac{1+3\sqrt3}{1+3\sqrt3}=\frac{\sqrt3+9}{1-27}=\frac{\sqrt3+9}{-26}=-\frac{\sqrt3+9}{-26}$

$\frac{\sqrt5}{\sqrt[3]{5}}=5^{\frac12}\div5^{\frac13}=5^{\frac12-\frac13}=5^{\frac36-\frac26}=5^\frac16=\sqrt[6]5$